Compression-box.



J. F. DDUTH'T @L S. J. ELLES,

COMPRESSION BOX.

APPLxcMmN FILED fas. 14. 19u.

Patented Nov. 2?, 19H1 llllll-ED PATENT FFll@E JOHN F. DOUTHAT ANDSAMUEL J. ELLIS, OF MEMPHIS, TENNESSEE; SAID '.DOUTHAT ASSIGNOR TO SAIDELLIS.

COMPRESSON-BOX.

Application inea February 14, v1917.

To all whom t may concern.'

Be it lrnown that we, JOHN F. DoU'rHAT and SAMUEL J. ELLIS, citizens ofthe United States, residing at Memphis, in the county of Shelby andState of Tennessee, have inp vented certain new and useful Improvefments in Compression-Boxes, of which the following is a specification,reference being had therein to the accompanying drawing.

This invention relates to certain new and useful improvements incompression boxes used in cotton seed oil mills for extracting the oilfrom the oil meal after it has been properly prepared, the object beingto provide a compression box with a series of mat plates provided withslots for allowingr a free exit of the oil into the drain ducts of thebox so as to eliminate the forming of a vacuum so as to prevent oil frombeing drawn back into the cake after the pressure is removed and toallow the cake to be read ily removed from the box.

Another object of our invention is to provide a compression box which isso constructed that the mat plates are supported on the box in such amanner that the plates are prevented from spreading under pressure andare supported upon a perfect foundation so as to withstand the necessarypressure required for extracting the oil therefrom.

Another object of our invention is to provide a compression box which isexceedingly simple and cheap in construction and one in which the matplates can be quickly placed in position or removed from the box so asto enable the plate to be repaired if necessary.

Other and further objects and advantages of the invention will behereinafter set forth and the novel features thereof defined by theappended claims.

In the drawings,

Figure 1 is a perspective view of our improved construction ofcompression box;

Fig. 2 is a longitudinal vertical section through the same; and

Fig. 3 is a detail perspective view of a portion of one of the matplates.

Like numerals of reference refer to like parts in the several figures ofthe drawing.

In carrying out our invention we employ a rectangular box 1 which ispreferably formed of a solid block of metal or any other suitablematerial having its upper face reduced to form shoulders 2, theintermediate `Specification of Letters Patent.

Patented Nov. 2'?, MMT.

Serial No. 148,671.

portion being longitudinally grooved forming parallel ribs 3, thegrooves being formed with inclined bottoms to provide parallel drainducts l so as to allow the oil to readily drain from the box as will behereinafter fully described.

Mounted on the box are a series of longitudinally disposed mat plates 5herein shown three in number, which have their abutting edges lockedtogether by a dovetail oint as shown at 6, the intermediate plateresting on the ribs and the marginal plates on the ribs and shoulders 2which prevents the plates from spreading when under pressure. ln lockingthe plates together by a dovetail joint as herein shown, theintermediate or central plate is provided with a longitudinally disposeddovetail groove 7, along one of its edges, and a longitudinally disposeddovetail shaped tongue 8 along its opposite edges which are adapted toreceive and lit within the longitudinally disposed tongues and groovesformed along the inner edges of the marginal plates so as to securelylock the mat plates together. The plates are. preferably secured inposition within the box by screws 9 as clearly shown in Fig. l, thescrews passing through openings formed by notching the edges of the matplates and the longitudinally disposed side edges of the plate above.the shoulders, whereby the marginal edges of the plates are held in setposition within the box.

rlhe mat plates 5 are provided with staggeredly arranged slits 10 whichextend toward the longitudinal center of the plate from the oppositeedges thereof, said slits having their opposing side walls beveled t0form tapering slits which terminate at the face of the plate so as toform passages for the oil which prevents the oil from accumulatingwithin the slits and allows a free exit of the oil into the draingrooves which prevents a vacuum from being formed therein.

From the foregoing description it will be seen that we have provided acompression box constructed in such a manner that an exceedingly thinbox is provided which increases the capacity of extracting the oil inany press in which it is used, whereby we are able to obtain betterresults than with prior constructions of boxes used in connection withoil presses.

We claim:

l. A compression box, comprising a body said reduced portion beingprovided With longitudinally disposed drain ducts, a series "of matplates arranged over said drain ducts, the edges of said mat platesbeing 'interlooked together.

3. A compression box, .comprising a body portion having its upper facereduced to `form longitudinally disposed marginal ribs, a series ofgrooves formed in said reduced portion, and a series of mat platesarranged iin the reduced portion of said body having their edgesinterlocked together, said mat plates having staggeredly arranged slits.

y 4. A`co1npression box, comprising a body 'portion having its upperface reduced to form longitudinally disposed marginal ribs, a series ofparallel drain ducts formed in said reduced portion, a plurality of matplates arranged in said reduced portions over said drain ducts havingslits, said mat plates being provided With dovetail tongue and grooveedges interlocked together, and means securing said mat plates inposition on said box.

5. A compression box, comprising a body portion having a series of drainducts formed therein and a series of mat plates arranged on said bodyportion having staggeredly arranged tapering slits, and means forinterlocking the edges of said plates together.

In testimony whereof We hereunto affix our signatures in the presence oftwo Witnesses. 1

JOHN F. DOUTHAT. SAMUEL J. ELLIS. Witnesses:

H. H. KRoNz, L. C. RUTLAND.

f l 1 Colejsfot this patent may be obtained tor ve cents each, byaddressing the Commissioner of Patents,

Washington, D. U. 1

